Tension device for silk-twisting machines



(No Model.)

G SINGLETON TENSION DEVICE FOR SILK TWISTING MACHINES.

Patented JanQZQ, 1895.

WJZJVESSES GEORGE SINGLETON, OF DOYER, NEW JERSEY.

TENSION DEVICE FOR SILK-TWISTING MACHINES.

SPECIFICATION forming part of Letters Patent No. 533,238, dated January29, 1895.

Application filed April 16, 18 94.

To all whom it may concern:

Be it known that I, GEORGE SINGLETON, a citizen of the United States,and a resident of Dover, in the county of Morris and State of NewJersey, have invented certain new and useful Improvements in TensionDevices for Silk-Twisting Machines; and I do hereby declare that thefollowing is a full, clear, and exact description of the invention,which will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,which form a part of this specification, and in whioh- Figure 1represents, in sectional elevation, so much of a silk-twisting machineas is necessary to illustrate the construction and application of myimproved tension-device.

Fig. 2 is a front elevation of the tension-device. Fig.3 is aperspective detail view of my improved tension-device, illustrating,more clearly, the manner of fastening said device upon the frame of themachine above the spindle; and Fig.4 is adetail view of the duplexwire-support or bearing upon which the hollow tension-cylinders aresupported and revolve.

Like letters of reference designate corresponding parts in all thefigures.

This invention relates to an automatic gravity tension-device forsilk-twisting machines or other twisting machines, or wherever a tensionis required on a thread while passing from one spool to another, or froma spool to a skein; and has for its object the giving an even tension onthe thread while being transferred from one spool to another; either inthe process of twisting, or for any other process where a tension on athread is required, at the same time providing against too great, aswell as too little, tension-strain upon the thread as it passesfrom thespindlebobbin or spool to the receiving-spool or bobbin, or skein.

With these objects in view, my invention consists in the improvedautomatic gravitytension device which will be hereinafter more fullydescribed, and in the combination with a twistingmachine of saidimproved tension device.

Referring to the accompanying drawings,

the reference letter A denotes so much of the $erial No, 507,717. (Nomodel.)

frame of a silk-twisting machine as is necessary to properly illustrateand explain my invention; B, the spindle; C, the spindle-spool or bobbinfrom which the thread is to be unwound; D, the spindle-pulley; E,thedriving cylinder with its belt, e,- (shown in broken lines;) F, thetraverse bar; G, the receivingspool or bobbin; and H the driving-roll.As these severalparts do not differ in their construction, relativearrangement, or operation, from the usual and well-known constructionand arrangement, they will require no further description here.

Upon the transverse rail, A ,of the machineframe, A, is fastened, aboveand registering with each spool or bobbin, a duplex bearing ortension-support, I made preferably of twisted wire, and of the peculiarconstruction and configuration illustrated more clearly in Fig. at. Byreference to this figure, it will be seen that this bearing consists ofa piece of smooth wire, which is first twisted so as to form an eye orloop, 6, through which a fastening-screw, i, may be inserted, and thenbent to form two parallel arms, Jand .l, the free ends of both of whichare bent to form elbows, k and It, from which the ends of the two wiresare again bent or deflected at right angles to the arms, J and J, so asto form the outwardly-proj ectin g parallel hearings or supports, K andK. The extreme outer end of each arm, K and K, is turned up at rightangles so as to form a stop, as shown at .h and h. Upon each of thesearms or bearings, K and K, is hung loosely a hollow metal cylinder, Land L. In practice,I prefer to make these cylinders of steel,nickel-plated and with a very smooth and highly-polished exteriorfinish; but they may be made of any othersuitable metal; or of glass; orany other suitable material suflioiently hard and capable of receiving avery smooth finish. The distance between the bearings, K K, is less thanthe diameter of the cylinders, so that when the cylinders are hungloosely upon them, and in consequence of the bearings being less indiameter than the cylinders, as aforesaid, the two surfaces of thecylinders will be brought together, as shown in Fig. 2, so as toexercise a constant and even pressure on the thread.

Below the cylinders, L L, is the transverse guide-wire, M, which runshorizontally the entire length of the frame A and rail A, and serves toprevent the thread, shown bythe broken line marked T, from being carriedendwise ofi of the cylinders as it passes up to the winding-bobbinoutside of said guide-rod or wire, M. Above the cylinders, L, L isanother thread-guide, N, which consists of a short rod or piece ofsmooth wire, bent into an eye at its inner end, so that it may beconveniently fastened upon the top of the rail A by means of a screwinserted through the eye, and, extending outwardly parallel to the axisof the tension-cylinders, is bent at its outer end into a hook, n. Idesire it to be understood, however, that instead of fastening thisupper guide-wire, N, upon the machine-frame in the manner described, itsinner end may be made screw-threaded, so that it may be screwed into therail of the machine, thus dispensing with the use of a separate screwfor fastening it to the rail; and it will also be obvious, that, while Iprefer (for the sake of cheapness and convenience) to construct theduplex cylinder-bearing or support, I, with a screw-eye, 'i, for itsattachment to the frame of the machine by a screw inserted through saideye, other means of fastening said bearing to the frane of the machinemay be employed, if desire The operation of this device will be readilyunderstood on reference to the drawings, and is briefly as follows: Thestrand, T, as it comes from the spool or bobbin, 0, is passed outside ofthe transverse guide-wire or retainingguard, M, and in between the twocylinders, and then up to the receiving-bobbin across the upper traversebar, F; being prevented from slipping off from between the cylinders bythe transverse guard, M, and hooked guidewire, N, which latter alsokeeps the strand in its proper position on its upward passage betweenthe two cylinders. As it passes between the two loosely-hung and movablecylinders on the arms, K K, which are a less distance apart than thediameter of the cylinders, as aforesaid, the two cylinder surfaces arebrought together, producing automatically the proper tension, withoutundue rubbing upon or friction against the tliread, as both cylindersrevolve upon their respective supports, K and K, as the strand passesbetween them, as indicated by the arrows in Fig. 2.

By changing the cylinders for weightier ones, or by compressing thebearings, K K, the amount of tension will be increased proportionatelyto the increased gravity of the cylinders; while, reversely, the amountof tension desired may be reduced by substituting cylinders of lighterweight.

Having thus described my invention, I claim and desire to secure byLetters Patent of the United States- 1. A tension device for silktwisting and other machines, comprising two bearings between the windingand unwinding spools, and the two hollow cylinders loosely supportedupon said bearings, the distance apart of the said bearings being lessthan the combined radii of the two cylinders, so that the surfaces ofthe cylinders are pressed against each other.

2. A tension device for silk twisting and other machines comprising twobearings between the winding and unwinding spools, consisting of a pieceof wire formed with a central coil, two downwardly extending arms, andtwo outwardly extending arms at right angles thereto having their endsbent upwardly forming stops, and two hollow cylinders loosely supportedupon said bearings, the distance apart of said bearings being less thanthe combined radii of the two cylinders, so that the surfaces of the tWocylinders are pressed against each other, substantially as described.

3. The combination in a silk or other twisting machine, of the unwindingspool O and winding spool; hollow tension cylinders L and L, the tensionsupport I having bearings K and K, upon which said cylinders are looselyhung, the distance apart of said supports being less than the combinedradii of the two cylinders so that the surfaces of the two cylinders arepressed against each other; the lower transverse guide wire M; and upperhooked guide wire N, projecting from the frame of the machine above thetension cylinders and parallel to their axes, substantially asdescribed.

In testimony that I claim the foregoing as my own I have hereuntoaffixed my signature in presence of two witnesses.

GEORGE SINGLETON.

Witnesses:

ISRAEL D. CoNDIr, J r., CORNELIUS B. GAGE.

